NEW YORK — Looking to create more depth in Triple-A, the Rockies acquired right-hander Armando Galarraga from the Reds in exchange for pitcher Parker Frazier.

Since being robbed of a perfect game in June 2010 on a botched call by first base umpire Jim Joyce, Galarraga’s career has nosedived. The former Detroit Tiger has spent the last two years with the Diamondbacks and Astros, winning just four games.

The 31-year-old has pitched in Triple-A this season with the Reds, rebounding with a 2.98 ERA. He will be assigned to the Sky Sox, joining a veteran rotation that includes Jeff Francis and Aaron Cook. Without a trade for a high-profile arm, it’s very possible a minor leaguer will soon get a look in the rotation. Galarraga has a 4.78 career major league ERA.

Patrick, a third-generation Colorado native, is back for his second stint covering the Rockies. He first covered the team from 2005-2009, helping chronicle “Rocktober” in 2007 and also following the team’s playoff run in 2009.

Nick Groke has worked at The Denver Post since 1997, as a sports reporter, city reporter, entertainment writer and digital editor and producer, among other newsroom posts. He also writes regularly about boxing, soccer, MMA and NASCAR.